81373136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{391217}}^1$

素因数の和:391238

約数の個数: 20

約数和(自身を含む): 169788612

約数和(自身を除く): 88415476

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 391217, 782434, 1564868, 3129736, 5085821, 6259472, 10171642, 20343284, 40686568, 81373136]

約数ペア:

[(1, 81373136), (2, 40686568), (4, 20343284), (8, 10171642), (13, 6259472), (16, 5085821), (26, 3129736), (52, 1564868), (104, 782434), (208, 391217)]